Protection Working LED indicates provide protection by indicating when circuitry is working properly. 6 Surge Protected Outlets defend your valuable electronics from dangerous surges, spikes, and lightning. A 4 foot high quality power cord and rear wall mounting key holes allow for flexible set-up in tight locations. Ground OK Indicator reports when your home wiring is working properly. 2 USB Ports provide 2.4 Amps of convenient charging power for your mobile devices and tablets. Smart Charging recognizes your device and maximizes the charging speed. Best in class service covers a lifetime warranty on the unit and $50,000 lifetime connected equipment protection policy, and free technical support.